Eastern European alphabet using Latin and Greek characters. Developed in the 9th century by the monk Cyrus, it's a phonetic alphabet drawing upon the native Slavic language and the languages and alphabets mentioned above.
So, there'll be "english" letters that are the same in english such as A, M, and T, but there'll also be letters like P, and C, which are R and S in cyrillic, as well as letters that have no relation to modern Latin, such as Ф and Л.

Man, I can't read this. PECTOBAH? If it's a pectobah, why are they saying Restoran?
- Tourist in Moscow trying to read restaurant sign in Cyrillic.